Answer:
B
Step-by-step explanation:
A water molecule is made up of an oxygen molecule bonded covalently to two hydrogen atoms. Each of the hydrogen atoms shares an electron pair with the oxygen stabilizing their electron configurations to 2 and that of oxygen to 2.8. The oxygen atom will, therefore, have two extra pairs of unbonded electrons that occupy space and repel each other include the bonding pair electrons. Due to these repulsive interactions, all these electron pairs arrange themselves into a tetrahedral geometrical shape in space with the angles between the pairs being 109.5 degrees.